Question

Salma photocopied the design for a monorail track system. The figure below shows the design and its photocopy.

The ratio of DA : BC is 1 : 2. The total length of track on the design is 47 meters. What is the length, in meters, of side EH on the photocopied image?

Answer 1

Let DA = x, BC = 2x
The total perimeter of the figure on the left is 47 = 15 + 17 + x + 2x
Solve for x
The problem seems to assume that DA = EH.

Answer 2

ok

Answer 3

i got 22.5 but i think its wrong.

Answer 4

is it 15 ?

Answer 5

solve for x
15 = 3x

Answer 6

5

Answer 7

I think that should be correct.

Answer 8

should i plug it in to b sure?

Answer 9

Always.

Answer 10

47=15+17+x+2x
47=15+17+5+2(5)
47=15+17+5+10
47=15+17+15
47=15+32
47=47
CORRECT.!

Answer 11

vg

Answer 12

thanks.